Multiple choice

Which statement is not true about sunlight?

  1. Gamma rays are shorter in wavelengths than the visible light.

  2. Only the visible portion of sunlight is used in photosynthesis.

  3. Photons of ultraviolet light contain low energy, and so are harmless to cells.

  4. Shorter wavelengths of radiation contain more energy than longer wavelengths.

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ultraviolet (UV) light is high-energy radiation, not low-energy. It is harmful to cells because it can damage DNA, which is why it is not considered harmless.

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